package com.tony.study.thread;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Created with IntelliJ IDEA.
 *
 * @Title: SleepDemo02
 * @Auther: 皮蛋布丁
 * @Date: 2021/10/31/14:54
 * @Description: 模拟倒计时
 */
public class SleepDemo02 {

    public static void main(String[] args) {
        /*try {
            tenDown();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }*/

        //打印当前系统时间
        Date startTime = new Date(System.currentTimeMillis());  //获取当前系统时间
        while (true) {
            try {
                Thread.sleep(1000);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
                startTime = new Date(System.currentTimeMillis());   //更新当前时间
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    /**
    * @Description: tenDown 模拟倒计时
    * @Param: []
    * @return: void
    * @Author: 皮蛋布丁
    * @Date: 2021/10/31 14:56
    */
    public static void tenDown() throws InterruptedException {
        int num = 10;
        while (true) {
            Thread.sleep(1000);
            System.out.println(num--);
            if (num <= 0) {
                break;
            }
        }
    }
}
